Fluid compressor



April 2, 1929- H. a. HALvoRsEN 1,707,304

FLUID COMPRES SOR Filed Feb. 25, 1927 .Mil/H M" im.

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Patented Apr.. 2, 1929.

l,.ltll,304

HALBERT '.B. HALVORSEN, 0F MICHGAN CITY,

FLUID GOMPREEEMHA.

Application. filed February 23, 1927.

This invention relates to fluid compressors and more particularly to improved driving means for such compressors.

An object of this invention is to provide a fluid compressor having its driving inotor arranojed in an improved and simplied manner relative to the compressor crank shaft. Another object of this invention is to provide an improved compressor of the synchronous motor driven type wherein the rotor of the driving motor is secured directly to the compressor crank shaft vvhile the statoris mounted directly on the compressor base. Still another object is to provide animproved compressor unit which is of exceedingly compact construction, the floor space required for setting up the compressorbeinp; reduced to a` minimum. Another object is to provide an improved compressor wherein a common base is provided for supporting both the compressor and the drivinginot-or. These and other objects and advantages of this inventionwill, however, subsequently more fully appear.

, ln the accompanying` drawings there is shovvnfor purposes of illustration one form and a modification `thereof which the invention may assume in practice.

In these drawings,V

Fig. 1 is a side elevational view of the iniproved fluid compressor.

Fig. 2 is an end elevational vievv of the compressor shown in Fior. 1.

Fig. 3 is an enlarged transverse vertical sectional view taken on line 3m? of 1, parts being shown in elevation to simplify illustration.

Fig. 4C is a detail sectional view illustratingr the adjusting means for the motor casing.

Fig. 5 is a detail vievv illustrating' slightly modified form of construction.

In this illustrative construction there is shown a fluid compressor of the so-called anglo compound type having a frainel on which are disposed at right angles with respect to each other compressor cylinders 2 and 3. The horizontally disposed cylinder` 2 is the low pressure cylinder from which the compressed fluid is discharged through an inter cooler l to the vertical high pressure cylinN der 3. As is usual in compressors of the type disclosed, the cylinders 2 and 3 contain reoiprocable pistons (not shown) driven from a common crank shaft 5. The crank shaft .5 is horizontally disposed and entends trans versely of the frame 17 the crank shaft being" Serial No. 170,410.

journaled in suitable bearings (i suitably carried by the frame 1. As clearly shown in Fig. 3 the crank shaft 5 projects laterally through the of the frame 1 a sl'lbstantial distance at 7. The compressor is mounted on` and rin. ly secured to a base freine 8 having1 a laterally projecting; portion 9. rlhe portion S) of the ba se frame recessed as at 10 for a pur-- pose foibe later described.

.in theiinproved construction the driving i base frame 8 and ha\.inglhreadedly connected thereto set screws 14 and 15 at each side thereof. are adapted to vary the lateral position of the stator 11 with respect to the rotor 12., While the set screws 15 are adapted to adjust the stator vertically. If desired, however, the set screws 15 may be omitted and shines insorted between the frame 13 and the s Iator 11 to adjust the vertical position of the latter. '.llhe side members or feet of the motor en lmarinn1 plates or pads 1G supported on the plates 13. liteferringito lTi 3 it will be noted that the Wires 1T leading to the motor Windings project downwardly from beneath the inotor Within the recess 10 formed in the base franse.

ln the modification shown. on Fig. 5 the laterally projecting portion 9 of the base frame 8 has been extended as at 18 and mounted on this base frame portion is an outboard bear g 19 in which the compressor crank shaft 1 "'otatively mounted. However, in the smaller types of compressors such as those shown in lzligis. 1 to 3. the oi'ltboard bearing 1 9 is unnecessary, the rotor of the motor being); sui'iporteril entirely by the compressor crank shaft.

its aresailt of this invention an improved fluid compressor' is provided which exceedingly con .met in construction., the driving niotor turing mounted di lectly on the hase of the coinyn'esfuir and hav' s rotor supported entirely by the compressor crank shaft. lt

The set screws 14E Wljlen adjusted i VWill further be noted that by arranging the assume in practice, it will be understood that these forms oi' the same are shown ior puryposesoii illustration' and vthat the invention Vmay bey modified? and embodiedl 1n various other forms Without departing from its spirit or the scope of the appended claims.

' What'I claim asV ners7 and; desire to secure by' Letters Patent is I i g v1:.Inl combination, a supporting base,

'- pumping mechanismsupported thereby including a horizontal` crank shaft, and a driving motor mountedon said base and having its rotorv fixed directly to said crank shaft and its casing secured-to said base and surroundingsaid rotor out of contact with said l crank shaft.

Z' Inl combination', 1aV supporting base,

pumpingV mechanism supported thereby in-V l Acl'udinga horizontal crank shaftandbearings for said crankshaft, and a 'driving motor for lsaid'.pumpingfmechanism, said motor comprising a rotor -fixed directly to said crank I shaft andacasing adjust-ably secured to said base-the bearings for said crank shaft being supported by said base independently of said motor casing.v y

3. Inv combination, 'a supporting' base, pumping mechanism supported thereby including'a horizontal crank shaft and bearings'wfor said crank shaft, a driving motor for said pumping mechanism, said motor comprising a rotor fixed directly to said crank shaft and a casing carried by said base,

Vand means for adjusting said motor casing laterally relative to said base, said bearings for said crankshaft being supported by said base independently of saidl Amotor casing.

t. In' combination, a supporting base, pumping mechanism supported 'thereby including a horizontal crank shaft and bearings for said crank shait, a drivingl motor tor said pumping mechanism, said motor comprising a rotor fixed directly to said crank shaft and a casing carried by said base, and means for adjustingsaid motor casing laterallycand vertically reiative to sai-d base, said bearings for said' crank shaft beingr supported by said base independently ot said motor casing.

5.'In combination, a supporting base, pumping mechanism supported thereby iucluding a frame and a horizontal crank shaft, anda driving motor i'or said pumping mechanism, saidv motor comprising a rotor fixed directly to said crank shaft and a casing adjustably secured to said base, said crank shaft being supported solely by said frame.

6.. In combination, a supporting base, pumping mechanism supported thereby including a horizontal crank shaft and' bearings for said crank shaft, and a synchronous driving motor for said pumping mechanism, said motor comprising` a rotor iixed directly to and supported entirely by said crank shaft and a stator adjustably secured to said base, the bearings for said crank shaft being supported by said base independently of said stator.

In testimony whereof I affix my. signature.

HALBERT B. HALVORSEN. 

